12949949 has 2 divisors, whose sum is σ = 12949950. Its totient is φ = 12949948.

The previous prime is 12949939. The next prime is 12949987. The reversal of 12949949 is 94994921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8305924 + 4644025 = 2882^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 12949949 - 2¹² = 12945853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12949919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6474974 + 6474975.

It is an arithmetic number, because the mean of its divisors is an integer number (6474975).

Almost surely, 2^12949949 is an apocalyptic number.

It is an amenable number.

12949949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12949949 is an equidigital number, since it uses as much as digits as its factorization.

12949949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 47.

The square root of 12949949 is about 3598.6037570147. The cubic root of 12949949 is about 234.8313200270.

The spelling of 12949949 in words is "twelve million, nine hundred forty-nine thousand, nine hundred forty-nine".